To enable VRRP, you must have at least two routers with the same branch ID. VRRP
changes require a complete configuration update on the devices
Virtual Router Redundancy Protocol (VRRP) allows multiple routers to function as a
single logical routing unit. When using VRRP, routers that each have a different
IP address share a VRRP ID and a virtual IP address that other network devices use
as the router address. Routers that share a VRRP ID use VRRP to determine the state
of other routers with the same VRRP ID. If one becomes unresponsive for a specific
amount of time, VRRP uses the priority setting to determine which router will take
over routing traffic.
Use the following steps to configure VRRP.
-
Toggle Enable
VRRP to On.
-
Enter the VLAN ID for the routed traffic.
-
Enter the static subnet for the routed traffic.
-
Indicate whether a router in the VRRP routing group is included in the
redundancy.
-
Enter the priority of the router.
- High: This router handles the traffic.
- Medium: This router handles the traffic when the
high-priority router is offline.
- Low: This router becomes active when the other
priority routers are all offline.
-
Enter a numeric VRRP ID.
-
Enter the static virtual IP address that the routers share.
-
Enter the interval that the routers will wait before advertising their
availability (the default is one second).
-
Select whether a higher-priority
backup router preempts a lower-priority primary router.
-
Select whether the router monitors the state of the WAN connection.
If the primary router
WAN connection is unresponsive, VRRP activates a backup router to handle
traffic.
